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SBA-15担载极低载量过渡金属催化剂上乙烷选择氧化的研究

发表时间:2011-04-15  浏览量:1688  下载量:699
全部作者: 刘坚,张鹏,赵震,张哲,段爱军,姜桂元
作者单位: 中国石油大学(北京)理学院,重质油国家重点实验室;中国石油天然气股份有限公司石油化工研究院
摘 要: 用等体积浸渍法制备SBA-15介孔分子筛担载极低载量的系列过渡金属氧化物催化剂,使用氮气吸附、小角X射线衍射(X-ray diffraction, XRD)和紫外激光拉曼光谱对这些催化剂的结构进行表征,并评价这些催化剂对乙烷选择氧化的活性与选择性。实验结果表明:在对乙烷分子氧选择氧化催化反应中,具有相对稳定的全充满、半充满或无d电子表面离子结构的Zn/SBA-15,Fe/SBA-15和V/SBA-15催化剂对醛类含氧化合物的选择性较高。
关 键 词: 物理化学;乙烷;选择氧化;催化剂;SBA-15;担载氧化物
Title: Study on selective oxidation of ethane over SBA-15 supported catalyst with ultra-low loading amount of transitional metal
Author: LIU Jian, ZHANG Peng, ZHAO Zhen, ZHANG Zhe, DUAN Aijun, JIANG Guiyuan
Organization: State Key Laboratory of Heavy Oil, College of Science, China University of Petroleum, Beijing; Petrochemical Research Institute, China National Petroleum Corporation
Abstract: A series of SBA-15 mesoporous zeolite-supported transitional metal oxide catalysts with low loading amount of additives were prepared by the method of incipient-wet impregnation. The structures of the catalysts were characterized by using the techniques of N2 adsorption, low angle X-ray diffraction (XRD) and UV-Raman spectroscopy, and their catalytic performances for the selective oxidation of ethane were investigated. The results demonstrated that for the Zn/SBA-15, Fe/SBA-15 and V/SBA-15 catalysts, the stable ion configuration structures with d-orbitals fully occupied or half occupied or empty are good for the selective oxidation of ethane to aldehydes.
Key words: physical chemistry; ethane; selective oxidation; catalyst; SBA-15; supported oxide
发表期数: 2011年4月第7期
引用格式: 刘坚,张鹏,赵震,等. SBA-15担载极低载量过渡金属催化剂上乙烷选择氧化的研究[J]. 中国科技论文在线精品论文,2011,4(7):596-600.
 
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